CN113339764A - Double-tube laser conduction lighting system adopting echo blue light detection - Google Patents

Double-tube laser conduction lighting system adopting echo blue light detection Download PDF

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Publication number
CN113339764A
CN113339764A CN202110786766.7A CN202110786766A CN113339764A CN 113339764 A CN113339764 A CN 113339764A CN 202110786766 A CN202110786766 A CN 202110786766A CN 113339764 A CN113339764 A CN 113339764A
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CN
China
Prior art keywords
blue light
echo
optical fiber
light
detection
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Withdrawn
Application number
CN202110786766.7A
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Chinese (zh)
Inventor
刘浪
侯杰
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Chongqing Yunchuang Jianglai Photoelectric Technology Co ltd
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Chongqing Yunchuang Jianglai Photoelectric Technology Co ltd
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Priority to CN202110786766.7A priority Critical patent/CN113339764A/en
Publication of CN113339764A publication Critical patent/CN113339764A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0457—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/048—Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)

Abstract

The invention belongs to the technical field of illumination, and particularly discloses a double-tube laser conduction illumination system adopting echo blue light detection, which comprises a double-tube laser conduction illumination system, an echo detection system, a control circuit and a power supply unit; optical fiber conduction is adopted, photoelectric separation is realized, and the illumination safety problem is improved; transmission type excitation is adopted, so that the light emitting efficiency and the service life of a blue light LD are improved, and the safety is improved; by adopting two blue light LDs, single-fiber energy can be effectively improved, the number of optical fibers is reduced, and construction cost is saved; the echo blue light detection is adopted, the light filtering system is adopted at the incident end of the transmission optical fiber, the reflected blue light is effectively transmitted to the photoelectric element PD, the light emitting condition can be monitored in time, and the safety is improved. The double-tube laser conduction lighting system adopting the echo blue light detection has the advantages of high light emitting efficiency, long service life, high safety and the like.

Description

Double-tube laser conduction lighting system adopting echo blue light detection
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to a double-tube laser conduction illumination system adopting echo blue light detection.
Background
The traditional illumination mainly adopts the mode that electricity is arranged in an area needing illumination, electric energy is converted into light through a photoelectric conversion chip, illumination is carried out after photoelectric conversion is achieved, safety accidents are easily caused due to the fact that photoelectric conversion is carried out in the illumination area, laser light conducts illumination, after the photoelectric conversion is achieved remotely, light with specific wavelength is transmitted to a place needing to be applied through optical fibers, the light with the specific wavelength is converted into needed white light through a fluorescent powder technology, and therefore electricity is not used in a use area, and photoelectric separation is achieved.
The laser light conduction illumination mainly uses light conduction, as the optical fiber adopts a quartz optical fiber, the fiber core is small, the optical fiber can be broken under the action of external force, after the optical fiber is broken, the whole illumination is in a non-illumination state, if a power supply is not cut off in time, light with specific wavelength can be lightened for a long time at the breaking position, the breaking position is in a closed state, energy can not be completely released, the overheating is easily caused under the long-time state, the heat reaches a certain level, the whole illumination system can be damaged, and under the condition of overhigh heat, a fire disaster can be caused or peripheral substances can be damaged.
Disclosure of Invention
The invention aims to provide a double-tube laser conduction illumination system adopting echo blue light detection, so as to solve the technical problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: a double-tube laser conduction lighting system adopting echo blue light detection comprises a double-tube laser conduction lighting system, an echo detection system, a control circuit and a power supply unit;
the double-tube laser conduction lighting system comprises two blue light emitting units, a beam combining mirror, a transmission optical fiber, a diffusion lens and a fluorescent cap; each blue light emitting unit includes a blue LD and a collimating lens; the transmission optical fiber comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC, and the output end is provided with a ceramic ferrule PC; the blue light irradiated by each blue light LD enters the transmission optical fiber through the collimating lens, the beam combining mirror and the filtering system respectively and is transmitted to the output end of the transmission optical fiber through the transmission optical fiber; the beam combining mirror combines the blue lights of the two blue light LDs to the light filtering system and enters the transmission optical fiber through the light filtering system; the inclination angle of the bevel edge of the blue light incident end of the ceramic ferrule APC is 7-9 degrees; the output end of the transmission optical fiber is provided with a diffusion lens and a fluorescent cap, and blue light output by the ceramic ferrule PC penetrates through the diffusion lens and then irradiates the fluorescent cap and excites white light;
the echo detection system comprises a light filtering system and a photoelectric element PD, wherein the light filtering system can transmit the blue light reflected by the diffusion lens to the photoelectric element PD and can also transmit the blue light irradiated by the blue light LD; the blue light reflected by the diffusion lens is reflected to a photoelectric element PD through a light filtering system, and the photoelectric element PD performs echo detection on the reflected blue light;
the echo detection system is used for transmitting a signal detected by the photoelectric element PD to the control circuit; the control circuit outputs a control signal to control the power supply unit to power off and supply the blue LD after judging according to a blue light echo detection value of the echo detection system;
and when the change rate of the detected blue light echo detection value exceeds a third threshold value, the power supply is controlled to be switched off.
Further, the diffusion lens is a plano-concave lens, and the thickness of the diffusion lens is 3-5 mm.
Furthermore, the fluorescent cap is made of silica gel and yellow fluorescent powder, the length of the fluorescent cap is 15-30mm, and the diameter of the fluorescent cap is 10-20 mm.
Further, the blue light wavelength of the blue light LD is 450nm +/-50 nm.
The working principle of the echo detection system of the invention is as follows: the transmission fiber output end adopts plano-concave lens, and the blue light that blue light LD sent can produce reflection light through plano-concave lens, and has adopted filtering system at the transmission fiber incident end, and the effectual blue light that will reflect back transmits photoelectric element PD on to detect the blue light-emitting condition, if transmission fiber fracture, the blue light that reflects back can form the sudden change, thereby reflection signal can form the sudden change, thereby can give the instruction of disconnected power.
The double-tube laser conduction lighting system adopting the echo blue light detection has the advantages that:
1. and optical fiber conduction is adopted, so that photoelectric separation is realized, and the illumination safety problem is improved.
2. The blue light wavelength is 450nm +/-50 nm, the power is high, and the quartz optical fiber is adopted for transmission, so that the optical fiber transmission illumination transmission distance is increased. The wavelength of blue light is 450nm +/-50 nm, and the single power can reach about 3-5W; the quartz fiber has a small loss value for light with a wavelength of 450nm +/-50 nm, and the loss of the quartz fiber is only about 6% of that of the plastic fiber, so that the quartz fiber can transmit a longer distance.
3. And by adopting transmission excitation, the light-emitting efficiency and the service life of the blue light LD are improved, and the safety is also improved. The output end adopts a diffusion lens to expand light, so that the light can be dispersed at various angles, the energy is dispersed in a space angle, the energy received by each unit point is small, the temperature is low, and the silica gel fluorescent cap can be adopted for excitation; in addition, the light diffusion by adopting the diffusion lens can improve the safety, and potential safety hazards can not be caused even if the fluorescent cap falls off due to low unit energy.
4. By adopting the ceramic ferrule APC and the ceramic ferrule PC, laser loss is small when laser is transmitted, the light emitting efficiency is high, and the light emitting efficiency is highest when the inclined angle of the inclined edge of the blue light incidence end of the ceramic ferrule APC is 7-9 degrees.
5. When the thickness of the diffusion lens is 3-5mm, the laser excitation efficiency is highest.
6. By adopting two blue light LDs, single-fiber energy can be effectively improved, the number of optical fibers is reduced, and construction cost is saved.
7. The echo blue light detection system is adopted, and the light filtering system is adopted at the incident end of the transmission optical fiber, so that the reflected blue light is effectively transmitted to the photoelectric element PD, the blue light emergent condition is detected, the emergent condition can be monitored in time, the safety is improved, meanwhile, the damage of the reflected light to the blue light LD is reduced, and the service life of the blue light LD is prolonged; in addition, the echo blue light detection system is simple in structure and low in cost.
The double-tube laser conduction lighting system adopting the echo blue light detection has the advantages of high light emitting efficiency, long service life, high safety and the like.
Drawings
Fig. 1 is a schematic structural diagram of a dual-tube laser conduction illumination system using echo blue light detection according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: 1. a blue LD; 2. a collimating lens; 3. a beam combining mirror; 4. a transmission optical fiber; 41. the ceramic ferrule APC; 42. a ceramic ferrule PC; 5. a diffusion lens; 6. a fluorescent cap; 7. a light filtering system; 8. a photoelectric element PD; 9. a control circuit; 10. a power supply unit.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment is basically as shown in the attached figure 1: a double-tube laser conduction lighting system adopting echo blue light detection comprises a double-tube laser conduction lighting system, an echo detection system, a control circuit 9 and a power supply unit 10; the double-tube laser conduction lighting system comprises two blue light emitting units, a beam combining mirror 3, a transmission optical fiber 4, a diffusion lens 5 and a fluorescent cap 6; each blue light emitting unit includes a blue LD1 and a collimator lens 2; the transmission optical fiber 4 is a quartz optical fiber and comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC 41, and the output end is provided with a ceramic ferrule PC 42; blue light irradiated by each blue light LD1 respectively enters the transmission optical fiber 4 through the collimating lens 2, the beam combining mirror 3 and the filtering system 7 and is transmitted to the output end of the transmission optical fiber 4 through the transmission optical fiber 4, and the wavelength of the blue light is 450nm +/-50 nm; the beam combining mirror 3 combines the blue light of the two blue light LD1 to the light filtering system 7 and enters the transmission optical fiber 4 through the light filtering system 7; the inclined angle of the inclined edge of the blue light incident end of the ceramic ferrule APC 41 is 7-9 degrees; the output end of the transmission optical fiber 4 is provided with a diffusion lens 5 and a fluorescent cap 6, and blue light output by the ceramic ferrule PC42 penetrates through the diffusion lens 5, then irradiates on the fluorescent cap 6 and is excited to emit white light; the diffusion lens 5 is a plano-concave lens with the thickness of 3-5 mm; the fluorescent cap 6 is made of silica gel and yellow fluorescent powder, and is manufactured by the silica gel and the yellow fluorescent powder through a mould according to a certain proportion, and the length of the fluorescent cap 6 is 15-30mm, and the diameter of the fluorescent cap 6 is 10-20 mm.
The echo detection system comprises a filter system 7 and a photoelectric element PD8, wherein the filter system can transmit the blue light reflected by the diffusion lens 5 to the photoelectric element PD8 and can also transmit the blue light irradiated by the blue light LD 1; the blue light reflected by the diffusion lens 5 is reflected to the photoelectric element PD8 through the filter system 7, and the photoelectric element PD8 performs echo detection on the reflected blue light;
the echo detection system is used for transmitting a signal detected by the photoelectric element PD8 to the control circuit 9; after the control circuit 9 determines according to the blue light echo detection value of the echo detection system, it outputs a control signal to control the power supply unit 10 to perform power off and power supply of the blue light LD 1; and when the change rate of the detected blue light echo detection value exceeds a third threshold value, the power supply is controlled to be switched off. The blue light LD1, the photoelectric element PD8, and the power supply unit 10 are each connected to a control circuit 9.
Most of blue light output by the ceramic ferrule PC42 can penetrate through the diffusion lens 5 for illumination, a very small part of the blue light can be reflected back to the transmission optical fiber 4 by the diffusion lens 5, the incident end of the transmission optical fiber 4 adopts the filtering system 7, the reflected blue light can be effectively transmitted to the photoelectric element PD8, so that the light-emitting condition of the blue light is detected, and if the transmission optical fiber 4 is broken, the reflected blue light can form sudden change, so that a reflected signal can form sudden change, and a power-off instruction can be given.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (4)

1. The utility model provides an adopt double-barrelled laser conduction lighting system of echo blue light detection which characterized in that: the system comprises a double-tube laser conduction lighting system, an echo detection system, a control circuit and a power supply unit;
the double-tube laser conduction lighting system comprises two blue light emitting units, a beam combining mirror, a transmission optical fiber, a diffusion lens and a fluorescent cap; each blue light emitting unit includes a blue LD and a collimating lens; the transmission optical fiber comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC, and the output end is provided with a ceramic ferrule PC; the blue light irradiated by each blue light LD enters the transmission optical fiber through the collimating lens, the beam combining mirror and the filtering system respectively and is transmitted to the output end of the transmission optical fiber through the transmission optical fiber; the beam combining mirror combines the blue lights of the two blue light LDs to the light filtering system and enters the transmission optical fiber through the light filtering system; the inclination angle of the bevel edge of the blue light incident end of the ceramic ferrule APC is 7-9 degrees; the output end of the transmission optical fiber is provided with a diffusion lens and a fluorescent cap, and blue light output by the ceramic ferrule PC penetrates through the diffusion lens and then irradiates the fluorescent cap and excites white light;
the echo detection system comprises a light filtering system and a photoelectric element PD, wherein the light filtering system can transmit the blue light reflected by the diffusion lens to the photoelectric element PD and can also transmit the blue light irradiated by the blue light LD; the blue light reflected by the diffusion lens is reflected to a photoelectric element PD through a light filtering system, and the photoelectric element PD performs echo detection on the reflected blue light;
the echo detection system is used for transmitting a signal detected by the photoelectric element PD to the control circuit; the control circuit outputs a control signal to control the power supply unit to power off and supply the blue LD after judging according to a blue light echo detection value of the echo detection system;
and when the change rate of the detected blue light echo detection value exceeds a third threshold value, the power supply is controlled to be switched off.
2. A dual tube laser conduction illumination system employing echo blue light detection as claimed in claim 1 wherein: the diffusion lens is a plano-concave lens, and the thickness of the diffusion lens is 3-5 mm.
3. A dual tube laser conduction illumination system employing echo blue light detection as claimed in claim 1 wherein: the fluorescent cap is made of silica gel and yellow fluorescent powder, the length of the fluorescent cap is 15-30mm, and the diameter of the fluorescent cap is 10-20 mm.
4. A dual tube laser conduction illumination system employing echo blue light detection as claimed in claim 1 wherein: the blue light wavelength of the blue light LD is 450nm +/-50 nm.
CN202110786766.7A 2021-07-12 2021-07-12 Double-tube laser conduction lighting system adopting echo blue light detection Withdrawn CN113339764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110786766.7A CN113339764A (en) 2021-07-12 2021-07-12 Double-tube laser conduction lighting system adopting echo blue light detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110786766.7A CN113339764A (en) 2021-07-12 2021-07-12 Double-tube laser conduction lighting system adopting echo blue light detection

Publications (1)

Publication Number Publication Date
CN113339764A true CN113339764A (en) 2021-09-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110786766.7A Withdrawn CN113339764A (en) 2021-07-12 2021-07-12 Double-tube laser conduction lighting system adopting echo blue light detection

Country Status (1)

Country Link
CN (1) CN113339764A (en)

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Application publication date: 20210903